I have already run 4 miles. My goal is to run 13 miles total. If I run at 3 miles per hour, how many hours will it take to reach my goal?

Answer:
3 more hours
Step-by-step explanation:
You have already run 4 of the 13 miles, so subtract 4 from 13. This leaves 9 more hours to run. If it takes you one hour to run three miles you need to run for 3 more hours to get 9 more miles.